#! /usr/bin/python3
# _*_ coding:UTF-8 _*_
# 'a test mudul'
# __author__ = '王楠'
import sys


def test():
    args = sys.argv
    if len(args) == 1:
        print('Hello World')
    elif len(args) == 2:
        print('Hello, %s!' % args[1])
    else:
        print('Too many agruments!')


if __name__ == '__main__':
    test()

